Finding the Third Proportional to 5,218,524 and 8,302,128

Step by Step Solution

1. Step 1: Write the proportion equation
   5,218,524 : 8,302,128 = 8,302,128 : x
2. Step 2: Convert to fraction form
   5,218,524/8,302,128 = 8,302,128/x
3. Step 3: Cross multiply
   5,218,524x = 8,302,128 × 8,302,128
4. Step 4: Simplify right side
   5,218,524x = 68,925,329,328,384
5. Step 5: Solve for x
   x = 68,925,329,328,384/5,218,524
6. Step 6: Final answer
   x = 13,207,820.70