Finding the Third Proportional to 31,303.25 and 69,605.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,303.25 : 69,605.50 = 69,605.50 : x
2. Step 2: Convert to fraction form
   31,303.25/69,605.50 = 69,605.50/x
3. Step 3: Cross multiply
   31,303.25x = 69,605.50 × 69,605.50
4. Step 4: Simplify right side
   31,303.25x = 4,844,925,630.25
5. Step 5: Solve for x
   x = 4,844,925,630.25/31,303.25
6. Step 6: Final answer
   x = 154,773.89