Finding the Third Proportional to 72,468 and 115,290

Step by Step Solution

1. Step 1: Write the proportion equation
   72,468 : 115,290 = 115,290 : x
2. Step 2: Convert to fraction form
   72,468/115,290 = 115,290/x
3. Step 3: Cross multiply
   72,468x = 115,290 × 115,290
4. Step 4: Simplify right side
   72,468x = 13,291,784,100
5. Step 5: Solve for x
   x = 13,291,784,100/72,468
6. Step 6: Final answer
   x = 183,415.91