Finding the Third Proportional to 639,538.50 and 1,375,851

Step by Step Solution

1. Step 1: Write the proportion equation
   639,538.50 : 1,375,851 = 1,375,851 : x
2. Step 2: Convert to fraction form
   639,538.50/1,375,851 = 1,375,851/x
3. Step 3: Cross multiply
   639,538.50x = 1,375,851 × 1,375,851
4. Step 4: Simplify right side
   639,538.50x = 1,892,965,974,201
5. Step 5: Solve for x
   x = 1,892,965,974,201/639,538.50
6. Step 6: Final answer
   x = 2,959,893.70