Finding the Third Proportional to 258,780.75 and 563,124

Step by Step Solution

1. Step 1: Write the proportion equation
   258,780.75 : 563,124 = 563,124 : x
2. Step 2: Convert to fraction form
   258,780.75/563,124 = 563,124/x
3. Step 3: Cross multiply
   258,780.75x = 563,124 × 563,124
4. Step 4: Simplify right side
   258,780.75x = 317,108,639,376
5. Step 5: Solve for x
   x = 317,108,639,376/258,780.75
6. Step 6: Final answer
   x = 1,225,395.01