Finding the Third Proportional to 402,479.50 and 838,031

Step by Step Solution

1. Step 1: Write the proportion equation
   402,479.50 : 838,031 = 838,031 : x
2. Step 2: Convert to fraction form
   402,479.50/838,031 = 838,031/x
3. Step 3: Cross multiply
   402,479.50x = 838,031 × 838,031
4. Step 4: Simplify right side
   402,479.50x = 702,295,956,961
5. Step 5: Solve for x
   x = 702,295,956,961/402,479.50
6. Step 6: Final answer
   x = 1,744,923.55