Finding the Third Proportional to 9,920,562 and 21,258,300

Step by Step Solution

1. Step 1: Write the proportion equation
   9,920,562 : 21,258,300 = 21,258,300 : x
2. Step 2: Convert to fraction form
   9,920,562/21,258,300 = 21,258,300/x
3. Step 3: Cross multiply
   9,920,562x = 21,258,300 × 21,258,300
4. Step 4: Simplify right side
   9,920,562x = 451,915,318,890,000
5. Step 5: Solve for x
   x = 451,915,318,890,000/9,920,562
6. Step 6: Final answer
   x = 45,553,398.98