Finding the Third Proportional to 65,688.19 and 88,264.69

Step by Step Solution

1. Step 1: Write the proportion equation
   65,688.19 : 88,264.69 = 88,264.69 : x
2. Step 2: Convert to fraction form
   65,688.19/88,264.69 = 88,264.69/x
3. Step 3: Cross multiply
   65,688.19x = 88,264.69 × 88,264.69
4. Step 4: Simplify right side
   65,688.19x = 7,790,655,059.47
5. Step 5: Solve for x
   x = 7,790,655,059.47/65,688.19
6. Step 6: Final answer
   x = 118,600.55