Finding the Third Proportional to 256,758.50 and 554,113

Step by Step Solution

1. Step 1: Write the proportion equation
   256,758.50 : 554,113 = 554,113 : x
2. Step 2: Convert to fraction form
   256,758.50/554,113 = 554,113/x
3. Step 3: Cross multiply
   256,758.50x = 554,113 × 554,113
4. Step 4: Simplify right side
   256,758.50x = 307,041,216,769
5. Step 5: Solve for x
   x = 307,041,216,769/256,758.50
6. Step 6: Final answer
   x = 1,195,836.62