Finding the Third Proportional to 61,231 and 89,749

Step by Step Solution

1. Step 1: Write the proportion equation
   61,231 : 89,749 = 89,749 : x
2. Step 2: Convert to fraction form
   61,231/89,749 = 89,749/x
3. Step 3: Cross multiply
   61,231x = 89,749 × 89,749
4. Step 4: Simplify right side
   61,231x = 8,054,883,001
5. Step 5: Solve for x
   x = 8,054,883,001/61,231
6. Step 6: Final answer
   x = 131,549.10