Finding the Third Proportional to 31,169 and 68,900.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,169 : 68,900.50 = 68,900.50 : x
2. Step 2: Convert to fraction form
   31,169/68,900.50 = 68,900.50/x
3. Step 3: Cross multiply
   31,169x = 68,900.50 × 68,900.50
4. Step 4: Simplify right side
   31,169x = 4,747,278,900.25
5. Step 5: Solve for x
   x = 4,747,278,900.25/31,169
6. Step 6: Final answer
   x = 152,307.71