Finding the Third Proportional to 6,280,432 and 9,960,960

Step by Step Solution

1. Step 1: Write the proportion equation
   6,280,432 : 9,960,960 = 9,960,960 : x
2. Step 2: Convert to fraction form
   6,280,432/9,960,960 = 9,960,960/x
3. Step 3: Cross multiply
   6,280,432x = 9,960,960 × 9,960,960
4. Step 4: Simplify right side
   6,280,432x = 99,220,724,121,600
5. Step 5: Solve for x
   x = 99,220,724,121,600/6,280,432
6. Step 6: Final answer
   x = 15,798,391.59