Finding the Third Proportional to 256,402.50 and 561,063

Step by Step Solution

1. Step 1: Write the proportion equation
   256,402.50 : 561,063 = 561,063 : x
2. Step 2: Convert to fraction form
   256,402.50/561,063 = 561,063/x
3. Step 3: Cross multiply
   256,402.50x = 561,063 × 561,063
4. Step 4: Simplify right side
   256,402.50x = 314,791,689,969
5. Step 5: Solve for x
   x = 314,791,689,969/256,402.50
6. Step 6: Final answer
   x = 1,227,724.73