Finding the Third Proportional to 1,521,715 and 3,598,688

Step by Step Solution

1. Step 1: Write the proportion equation
   1,521,715 : 3,598,688 = 3,598,688 : x
2. Step 2: Convert to fraction form
   1,521,715/3,598,688 = 3,598,688/x
3. Step 3: Cross multiply
   1,521,715x = 3,598,688 × 3,598,688
4. Step 4: Simplify right side
   1,521,715x = 12,950,555,321,344
5. Step 5: Solve for x
   x = 12,950,555,321,344/1,521,715
6. Step 6: Final answer
   x = 8,510,499.88