Finding the Third Proportional to 20,551,672.13 and 42,803,617.50

Step by Step Solution

1. Step 1: Write the proportion equation
   20,551,672.13 : 42,803,617.50 = 42,803,617.50 : x
2. Step 2: Convert to fraction form
   20,551,672.13/42,803,617.50 = 42,803,617.50/x
3. Step 3: Cross multiply
   20,551,672.13x = 42,803,617.50 × 42,803,617.50
4. Step 4: Simplify right side
   20,551,672.13x = 1,832,149,671,086,306.25
5. Step 5: Solve for x
   x = 1,832,149,671,086,306.25/20,551,672.13
6. Step 6: Final answer
   x = 89,148,447.87