Finding the Third Proportional to 65,518.88 and 139,617

Step by Step Solution

1. Step 1: Write the proportion equation
   65,518.88 : 139,617 = 139,617 : x
2. Step 2: Convert to fraction form
   65,518.88/139,617 = 139,617/x
3. Step 3: Cross multiply
   65,518.88x = 139,617 × 139,617
4. Step 4: Simplify right side
   65,518.88x = 19,492,906,689
5. Step 5: Solve for x
   x = 19,492,906,689/65,518.88
6. Step 6: Final answer
   x = 297,515.89