Finding the Third Proportional to 138,240 and 301,063.50

Step by Step Solution

1. Step 1: Write the proportion equation
   138,240 : 301,063.50 = 301,063.50 : x
2. Step 2: Convert to fraction form
   138,240/301,063.50 = 301,063.50/x
3. Step 3: Cross multiply
   138,240x = 301,063.50 × 301,063.50
4. Step 4: Simplify right side
   138,240x = 90,639,231,032.25
5. Step 5: Solve for x
   x = 90,639,231,032.25/138,240
6. Step 6: Final answer
   x = 655,665.73