Finding the Third Proportional to 5,302,139 and 8,107,280

Step by Step Solution

1. Step 1: Write the proportion equation
   5,302,139 : 8,107,280 = 8,107,280 : x
2. Step 2: Convert to fraction form
   5,302,139/8,107,280 = 8,107,280/x
3. Step 3: Cross multiply
   5,302,139x = 8,107,280 × 8,107,280
4. Step 4: Simplify right side
   5,302,139x = 65,727,988,998,400
5. Step 5: Solve for x
   x = 65,727,988,998,400/5,302,139
6. Step 6: Final answer
   x = 12,396,504.32