Finding the Third Proportional to 12,543,777 and 17,664,979.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,543,777 : 17,664,979.50 = 17,664,979.50 : x
2. Step 2: Convert to fraction form
   12,543,777/17,664,979.50 = 17,664,979.50/x
3. Step 3: Cross multiply
   12,543,777x = 17,664,979.50 × 17,664,979.50
4. Step 4: Simplify right side
   12,543,777x = 312,051,500,735,420.25
5. Step 5: Solve for x
   x = 312,051,500,735,420.25/12,543,777
6. Step 6: Final answer
   x = 24,876,996.84