Finding the Third Proportional to 256,987 and 552,246.50

Step by Step Solution

1. Step 1: Write the proportion equation
   256,987 : 552,246.50 = 552,246.50 : x
2. Step 2: Convert to fraction form
   256,987/552,246.50 = 552,246.50/x
3. Step 3: Cross multiply
   256,987x = 552,246.50 × 552,246.50
4. Step 4: Simplify right side
   256,987x = 304,976,196,762.25
5. Step 5: Solve for x
   x = 304,976,196,762.25/256,987
6. Step 6: Final answer
   x = 1,186,737.84