Finding the Third Proportional to 513,561 and 1,145,139

Step by Step Solution

1. Step 1: Write the proportion equation
   513,561 : 1,145,139 = 1,145,139 : x
2. Step 2: Convert to fraction form
   513,561/1,145,139 = 1,145,139/x
3. Step 3: Cross multiply
   513,561x = 1,145,139 × 1,145,139
4. Step 4: Simplify right side
   513,561x = 1,311,343,329,321
5. Step 5: Solve for x
   x = 1,311,343,329,321/513,561
6. Step 6: Final answer
   x = 2,553,432.46