Finding the Third Proportional to 31,254 and 67,428.75

Step by Step Solution

1. Step 1: Write the proportion equation
   31,254 : 67,428.75 = 67,428.75 : x
2. Step 2: Convert to fraction form
   31,254/67,428.75 = 67,428.75/x
3. Step 3: Cross multiply
   31,254x = 67,428.75 × 67,428.75
4. Step 4: Simplify right side
   31,254x = 4,546,636,326.56
5. Step 5: Solve for x
   x = 4,546,636,326.56/31,254
6. Step 6: Final answer
   x = 145,473.74