Finding the Third Proportional to 376,978.50 and 813,001.50

Step by Step Solution

1. Step 1: Write the proportion equation
   376,978.50 : 813,001.50 = 813,001.50 : x
2. Step 2: Convert to fraction form
   376,978.50/813,001.50 = 813,001.50/x
3. Step 3: Cross multiply
   376,978.50x = 813,001.50 × 813,001.50
4. Step 4: Simplify right side
   376,978.50x = 660,971,439,002.25
5. Step 5: Solve for x
   x = 660,971,439,002.25/376,978.50
6. Step 6: Final answer
   x = 1,753,339.88