Finding the Third Proportional to 4,142,898 and 8,861,472

Step by Step Solution

1. Step 1: Write the proportion equation
   4,142,898 : 8,861,472 = 8,861,472 : x
2. Step 2: Convert to fraction form
   4,142,898/8,861,472 = 8,861,472/x
3. Step 3: Cross multiply
   4,142,898x = 8,861,472 × 8,861,472
4. Step 4: Simplify right side
   4,142,898x = 78,525,686,006,784
5. Step 5: Solve for x
   x = 78,525,686,006,784/4,142,898
6. Step 6: Final answer
   x = 18,954,289.00