Finding the Third Proportional to 121,059 and 281,317.50

Step by Step Solution

1. Step 1: Write the proportion equation
   121,059 : 281,317.50 = 281,317.50 : x
2. Step 2: Convert to fraction form
   121,059/281,317.50 = 281,317.50/x
3. Step 3: Cross multiply
   121,059x = 281,317.50 × 281,317.50
4. Step 4: Simplify right side
   121,059x = 79,139,535,806.25
5. Step 5: Solve for x
   x = 79,139,535,806.25/121,059
6. Step 6: Final answer
   x = 653,726.99