Finding the Third Proportional to 85,477.78 and 186,160.78

Step by Step Solution

1. Step 1: Write the proportion equation
   85,477.78 : 186,160.78 = 186,160.78 : x
2. Step 2: Convert to fraction form
   85,477.78/186,160.78 = 186,160.78/x
3. Step 3: Cross multiply
   85,477.78x = 186,160.78 × 186,160.78
4. Step 4: Simplify right side
   85,477.78x = 34,655,836,475.61
5. Step 5: Solve for x
   x = 34,655,836,475.61/85,477.78
6. Step 6: Final answer
   x = 405,436.78