Finding the Third Proportional to 68,428.50 and 102,367.50

Step by Step Solution

1. Step 1: Write the proportion equation
   68,428.50 : 102,367.50 = 102,367.50 : x
2. Step 2: Convert to fraction form
   68,428.50/102,367.50 = 102,367.50/x
3. Step 3: Cross multiply
   68,428.50x = 102,367.50 × 102,367.50
4. Step 4: Simplify right side
   68,428.50x = 10,479,105,056.25
5. Step 5: Solve for x
   x = 10,479,105,056.25/68,428.50
6. Step 6: Final answer
   x = 153,139.48