Finding the Third Proportional to 3,991,432 and 8,266,363

Step by Step Solution

1. Step 1: Write the proportion equation
   3,991,432 : 8,266,363 = 8,266,363 : x
2. Step 2: Convert to fraction form
   3,991,432/8,266,363 = 8,266,363/x
3. Step 3: Cross multiply
   3,991,432x = 8,266,363 × 8,266,363
4. Step 4: Simplify right side
   3,991,432x = 68,332,757,247,769
5. Step 5: Solve for x
   x = 68,332,757,247,769/3,991,432
6. Step 6: Final answer
   x = 17,119,860.05