Finding the Third Proportional to 9,468,920 and 20,709,708

Step by Step Solution

1. Step 1: Write the proportion equation
   9,468,920 : 20,709,708 = 20,709,708 : x
2. Step 2: Convert to fraction form
   9,468,920/20,709,708 = 20,709,708/x
3. Step 3: Cross multiply
   9,468,920x = 20,709,708 × 20,709,708
4. Step 4: Simplify right side
   9,468,920x = 428,892,005,445,264
5. Step 5: Solve for x
   x = 428,892,005,445,264/9,468,920
6. Step 6: Final answer
   x = 45,294,712.12