Finding the Third Proportional to 639,534 and 1,375,842

Step by Step Solution

1. Step 1: Write the proportion equation
   639,534 : 1,375,842 = 1,375,842 : x
2. Step 2: Convert to fraction form
   639,534/1,375,842 = 1,375,842/x
3. Step 3: Cross multiply
   639,534x = 1,375,842 × 1,375,842
4. Step 4: Simplify right side
   639,534x = 1,892,941,208,964
5. Step 5: Solve for x
   x = 1,892,941,208,964/639,534
6. Step 6: Final answer
   x = 2,959,875.80