Finding the Third Proportional to 374,746.50 and 817,978.50

Step by Step Solution

1. Step 1: Write the proportion equation
   374,746.50 : 817,978.50 = 817,978.50 : x
2. Step 2: Convert to fraction form
   374,746.50/817,978.50 = 817,978.50/x
3. Step 3: Cross multiply
   374,746.50x = 817,978.50 × 817,978.50
4. Step 4: Simplify right side
   374,746.50x = 669,088,826,462.25
5. Step 5: Solve for x
   x = 669,088,826,462.25/374,746.50
6. Step 6: Final answer
   x = 1,785,443.83