Finding the Third Proportional to 253,440 and 555,673.50

Step by Step Solution

1. Step 1: Write the proportion equation
   253,440 : 555,673.50 = 555,673.50 : x
2. Step 2: Convert to fraction form
   253,440/555,673.50 = 555,673.50/x
3. Step 3: Cross multiply
   253,440x = 555,673.50 × 555,673.50
4. Step 4: Simplify right side
   253,440x = 308,773,038,602.25
5. Step 5: Solve for x
   x = 308,773,038,602.25/253,440
6. Step 6: Final answer
   x = 1,218,327.96