Finding the Third Proportional to 18,979,365,908.50 and 40,815,061,117.50

Step by Step Solution

1. Step 1: Write the proportion equation
   18,979,365,908.50 : 40,815,061,117.50 = 40,815,061,117.50 : x
2. Step 2: Convert to fraction form
   18,979,365,908.50/40,815,061,117.50 = 40,815,061,117.50/x
3. Step 3: Cross multiply
   18,979,365,908.50x = 40,815,061,117.50 × 40,815,061,117.50
4. Step 4: Simplify right side
   18,979,365,908.50x = 1,665,869,214,025,260,466,176
5. Step 5: Solve for x
   x = 1,665,869,214,025,260,466,176/18,979,365,908.50
6. Step 6: Final answer
   x = 87,772,648,573.01