Finding the Third Proportional to 71,724 and 103,158

Step by Step Solution

1. Step 1: Write the proportion equation
   71,724 : 103,158 = 103,158 : x
2. Step 2: Convert to fraction form
   71,724/103,158 = 103,158/x
3. Step 3: Cross multiply
   71,724x = 103,158 × 103,158
4. Step 4: Simplify right side
   71,724x = 10,641,572,964
5. Step 5: Solve for x
   x = 10,641,572,964/71,724
6. Step 6: Final answer
   x = 148,368.37