Finding the Third Proportional to 89,145 and 185,631.75

Step by Step Solution

1. Step 1: Write the proportion equation
   89,145 : 185,631.75 = 185,631.75 : x
2. Step 2: Convert to fraction form
   89,145/185,631.75 = 185,631.75/x
3. Step 3: Cross multiply
   89,145x = 185,631.75 × 185,631.75
4. Step 4: Simplify right side
   89,145x = 34,459,146,608.06
5. Step 5: Solve for x
   x = 34,459,146,608.06/89,145
6. Step 6: Final answer
   x = 386,551.65