Finding the Third Proportional to 368,084.25 and 788,656.50

Step by Step Solution

1. Step 1: Write the proportion equation
   368,084.25 : 788,656.50 = 788,656.50 : x
2. Step 2: Convert to fraction form
   368,084.25/788,656.50 = 788,656.50/x
3. Step 3: Cross multiply
   368,084.25x = 788,656.50 × 788,656.50
4. Step 4: Simplify right side
   368,084.25x = 621,979,074,992.25
5. Step 5: Solve for x
   x = 621,979,074,992.25/368,084.25
6. Step 6: Final answer
   x = 1,689,773.67