Finding the Third Proportional to 754,390 and 1,025,139

Step by Step Solution

1. Step 1: Write the proportion equation
   754,390 : 1,025,139 = 1,025,139 : x
2. Step 2: Convert to fraction form
   754,390/1,025,139 = 1,025,139/x
3. Step 3: Cross multiply
   754,390x = 1,025,139 × 1,025,139
4. Step 4: Simplify right side
   754,390x = 1,050,909,969,321
5. Step 5: Solve for x
   x = 1,050,909,969,321/754,390
6. Step 6: Final answer
   x = 1,393,059.25