Finding the Third Proportional to 63,478,478.50 and 89,391,685.50

Step by Step Solution

1. Step 1: Write the proportion equation
   63,478,478.50 : 89,391,685.50 = 89,391,685.50 : x
2. Step 2: Convert to fraction form
   63,478,478.50/89,391,685.50 = 89,391,685.50/x
3. Step 3: Cross multiply
   63,478,478.50x = 89,391,685.50 × 89,391,685.50
4. Step 4: Simplify right side
   63,478,478.50x = 7,990,873,436,530,910
5. Step 5: Solve for x
   x = 7,990,873,436,530,910/63,478,478.50
6. Step 6: Final answer
   x = 125,883,191.05