Finding the Third Proportional to 51,429.50 and 68,241.50

Step by Step Solution

1. Step 1: Write the proportion equation
   51,429.50 : 68,241.50 = 68,241.50 : x
2. Step 2: Convert to fraction form
   51,429.50/68,241.50 = 68,241.50/x
3. Step 3: Cross multiply
   51,429.50x = 68,241.50 × 68,241.50
4. Step 4: Simplify right side
   51,429.50x = 4,656,902,322.25
5. Step 5: Solve for x
   x = 4,656,902,322.25/51,429.50
6. Step 6: Final answer
   x = 90,549.24