Finding the Third Proportional to 19,781,742 and 42,176,382

Step by Step Solution

1. Step 1: Write the proportion equation
   19,781,742 : 42,176,382 = 42,176,382 : x
2. Step 2: Convert to fraction form
   19,781,742/42,176,382 = 42,176,382/x
3. Step 3: Cross multiply
   19,781,742x = 42,176,382 × 42,176,382
4. Step 4: Simplify right side
   19,781,742x = 1,778,847,198,609,924
5. Step 5: Solve for x
   x = 1,778,847,198,609,924/19,781,742
6. Step 6: Final answer
   x = 89,923,688.15