Finding the Third Proportional to 102,156.50 and 140,228.50

Step by Step Solution

1. Step 1: Write the proportion equation
   102,156.50 : 140,228.50 = 140,228.50 : x
2. Step 2: Convert to fraction form
   102,156.50/140,228.50 = 140,228.50/x
3. Step 3: Cross multiply
   102,156.50x = 140,228.50 × 140,228.50
4. Step 4: Simplify right side
   102,156.50x = 19,664,032,212.25
5. Step 5: Solve for x
   x = 19,664,032,212.25/102,156.50
6. Step 6: Final answer
   x = 192,489.29