Finding the Third Proportional to 18,979,365,907.50 and 40,815,061,115.25

Step by Step Solution

1. Step 1: Write the proportion equation
   18,979,365,907.50 : 40,815,061,115.25 = 40,815,061,115.25 : x
2. Step 2: Convert to fraction form
   18,979,365,907.50/40,815,061,115.25 = 40,815,061,115.25/x
3. Step 3: Cross multiply
   18,979,365,907.50x = 40,815,061,115.25 × 40,815,061,115.25
4. Step 4: Simplify right side
   18,979,365,907.50x = 1,665,869,213,841,592,680,448
5. Step 5: Solve for x
   x = 1,665,869,213,841,592,680,448/18,979,365,907.50
6. Step 6: Final answer
   x = 87,772,648,567.95