Finding the Third Proportional to 4,857,432 and 7,720,308

Step by Step Solution

1. Step 1: Write the proportion equation
   4,857,432 : 7,720,308 = 7,720,308 : x
2. Step 2: Convert to fraction form
   4,857,432/7,720,308 = 7,720,308/x
3. Step 3: Cross multiply
   4,857,432x = 7,720,308 × 7,720,308
4. Step 4: Simplify right side
   4,857,432x = 59,603,155,614,864
5. Step 5: Solve for x
   x = 59,603,155,614,864/4,857,432
6. Step 6: Final answer
   x = 12,270,507.46