Finding the Third Proportional to 76,018.50 and 161,878.50

Step by Step Solution

1. Step 1: Write the proportion equation
   76,018.50 : 161,878.50 = 161,878.50 : x
2. Step 2: Convert to fraction form
   76,018.50/161,878.50 = 161,878.50/x
3. Step 3: Cross multiply
   76,018.50x = 161,878.50 × 161,878.50
4. Step 4: Simplify right side
   76,018.50x = 26,204,648,762.25
5. Step 5: Solve for x
   x = 26,204,648,762.25/76,018.50
6. Step 6: Final answer
   x = 344,714.10