Finding the Third Proportional to 19,781,743.50 and 42,176,385

Step by Step Solution

1. Step 1: Write the proportion equation
   19,781,743.50 : 42,176,385 = 42,176,385 : x
2. Step 2: Convert to fraction form
   19,781,743.50/42,176,385 = 42,176,385/x
3. Step 3: Cross multiply
   19,781,743.50x = 42,176,385 × 42,176,385
4. Step 4: Simplify right side
   19,781,743.50x = 1,778,847,451,668,225
5. Step 5: Solve for x
   x = 1,778,847,451,668,225/19,781,743.50
6. Step 6: Final answer
   x = 89,923,694.12