Finding the Third Proportional to 13,939,694 and 20,499,280

Step by Step Solution

1. Step 1: Write the proportion equation
   13,939,694 : 20,499,280 = 20,499,280 : x
2. Step 2: Convert to fraction form
   13,939,694/20,499,280 = 20,499,280/x
3. Step 3: Cross multiply
   13,939,694x = 20,499,280 × 20,499,280
4. Step 4: Simplify right side
   13,939,694x = 420,220,480,518,400
5. Step 5: Solve for x
   x = 420,220,480,518,400/13,939,694
6. Step 6: Final answer
   x = 30,145,602.95