Finding the Third Proportional to 19,781,746 and 42,176,389

Step by Step Solution

1. Step 1: Write the proportion equation
   19,781,746 : 42,176,389 = 42,176,389 : x
2. Step 2: Convert to fraction form
   19,781,746/42,176,389 = 42,176,389/x
3. Step 3: Cross multiply
   19,781,746x = 42,176,389 × 42,176,389
4. Step 4: Simplify right side
   19,781,746x = 1,778,847,789,079,321
5. Step 5: Solve for x
   x = 1,778,847,789,079,321/19,781,746
6. Step 6: Final answer
   x = 89,923,699.81