Finding the Third Proportional to 375,864 and 788,632.50

Step by Step Solution

1. Step 1: Write the proportion equation
   375,864 : 788,632.50 = 788,632.50 : x
2. Step 2: Convert to fraction form
   375,864/788,632.50 = 788,632.50/x
3. Step 3: Cross multiply
   375,864x = 788,632.50 × 788,632.50
4. Step 4: Simplify right side
   375,864x = 621,941,220,056.25
5. Step 5: Solve for x
   x = 621,941,220,056.25/375,864
6. Step 6: Final answer
   x = 1,654,697.50