Finding the Third Proportional to 64,718.50 and 138,435

Step by Step Solution

1. Step 1: Write the proportion equation
   64,718.50 : 138,435 = 138,435 : x
2. Step 2: Convert to fraction form
   64,718.50/138,435 = 138,435/x
3. Step 3: Cross multiply
   64,718.50x = 138,435 × 138,435
4. Step 4: Simplify right side
   64,718.50x = 19,164,249,225
5. Step 5: Solve for x
   x = 19,164,249,225/64,718.50
6. Step 6: Final answer
   x = 296,117.02