Finding the Third Proportional to 76,431.09 and 179,837.72

Step by Step Solution

1. Step 1: Write the proportion equation
   76,431.09 : 179,837.72 = 179,837.72 : x
2. Step 2: Convert to fraction form
   76,431.09/179,837.72 = 179,837.72/x
3. Step 3: Cross multiply
   76,431.09x = 179,837.72 × 179,837.72
4. Step 4: Simplify right side
   76,431.09x = 32,341,605,085.20
5. Step 5: Solve for x
   x = 32,341,605,085.20/76,431.09
6. Step 6: Final answer
   x = 423,147.22