Finding the Third Proportional to 72,400 and 115,158

Step by Step Solution

1. Step 1: Write the proportion equation
   72,400 : 115,158 = 115,158 : x
2. Step 2: Convert to fraction form
   72,400/115,158 = 115,158/x
3. Step 3: Cross multiply
   72,400x = 115,158 × 115,158
4. Step 4: Simplify right side
   72,400x = 13,261,364,964
5. Step 5: Solve for x
   x = 13,261,364,964/72,400
6. Step 6: Final answer
   x = 183,168.02