Finding the Third Proportional to 683,200.50 and 973,231.50

Step by Step Solution

1. Step 1: Write the proportion equation
   683,200.50 : 973,231.50 = 973,231.50 : x
2. Step 2: Convert to fraction form
   683,200.50/973,231.50 = 973,231.50/x
3. Step 3: Cross multiply
   683,200.50x = 973,231.50 × 973,231.50
4. Step 4: Simplify right side
   683,200.50x = 947,179,552,592.25
5. Step 5: Solve for x
   x = 947,179,552,592.25/683,200.50
6. Step 6: Final answer
   x = 1,386,385.92