Finding the Third Proportional to 723,279 and 1,575,139

Step by Step Solution

1. Step 1: Write the proportion equation
   723,279 : 1,575,139 = 1,575,139 : x
2. Step 2: Convert to fraction form
   723,279/1,575,139 = 1,575,139/x
3. Step 3: Cross multiply
   723,279x = 1,575,139 × 1,575,139
4. Step 4: Simplify right side
   723,279x = 2,481,062,869,321
5. Step 5: Solve for x
   x = 2,481,062,869,321/723,279
6. Step 6: Final answer
   x = 3,430,298.50