Finding the Third Proportional to 72,405 and 115,159.50

Step by Step Solution

1. Step 1: Write the proportion equation
   72,405 : 115,159.50 = 115,159.50 : x
2. Step 2: Convert to fraction form
   72,405/115,159.50 = 115,159.50/x
3. Step 3: Cross multiply
   72,405x = 115,159.50 × 115,159.50
4. Step 4: Simplify right side
   72,405x = 13,261,710,440.25
5. Step 5: Solve for x
   x = 13,261,710,440.25/72,405
6. Step 6: Final answer
   x = 183,160.15