Finding the Third Proportional to 380,926.50 and 812,478

Step by Step Solution

1. Step 1: Write the proportion equation
   380,926.50 : 812,478 = 812,478 : x
2. Step 2: Convert to fraction form
   380,926.50/812,478 = 812,478/x
3. Step 3: Cross multiply
   380,926.50x = 812,478 × 812,478
4. Step 4: Simplify right side
   380,926.50x = 660,120,500,484
5. Step 5: Solve for x
   x = 660,120,500,484/380,926.50
6. Step 6: Final answer
   x = 1,732,934.04