Finding the Third Proportional to 14,859,515 and 20,532,499

Step by Step Solution

1. Step 1: Write the proportion equation
   14,859,515 : 20,532,499 = 20,532,499 : x
2. Step 2: Convert to fraction form
   14,859,515/20,532,499 = 20,532,499/x
3. Step 3: Cross multiply
   14,859,515x = 20,532,499 × 20,532,499
4. Step 4: Simplify right side
   14,859,515x = 421,583,515,185,001
5. Step 5: Solve for x
   x = 421,583,515,185,001/14,859,515
6. Step 6: Final answer
   x = 28,371,283.66