Finding the Third Proportional to 144,871.88 and 314,686.69

Step by Step Solution

1. Step 1: Write the proportion equation
   144,871.88 : 314,686.69 = 314,686.69 : x
2. Step 2: Convert to fraction form
   144,871.88/314,686.69 = 314,686.69/x
3. Step 3: Cross multiply
   144,871.88x = 314,686.69 × 314,686.69
4. Step 4: Simplify right side
   144,871.88x = 99,027,711,289.72
5. Step 5: Solve for x
   x = 99,027,711,289.72/144,871.88
6. Step 6: Final answer
   x = 683,553.74