Finding the Third Proportional to 388,972.50 and 524,364

Step by Step Solution

1. Step 1: Write the proportion equation
   388,972.50 : 524,364 = 524,364 : x
2. Step 2: Convert to fraction form
   388,972.50/524,364 = 524,364/x
3. Step 3: Cross multiply
   388,972.50x = 524,364 × 524,364
4. Step 4: Simplify right side
   388,972.50x = 274,957,604,496
5. Step 5: Solve for x
   x = 274,957,604,496/388,972.50
6. Step 6: Final answer
   x = 706,881.86