Finding the Third Proportional to 61,605 and 89,035

Step by Step Solution

1. Step 1: Write the proportion equation
   61,605 : 89,035 = 89,035 : x
2. Step 2: Convert to fraction form
   61,605/89,035 = 89,035/x
3. Step 3: Cross multiply
   61,605x = 89,035 × 89,035
4. Step 4: Simplify right side
   61,605x = 7,927,231,225
5. Step 5: Solve for x
   x = 7,927,231,225/61,605
6. Step 6: Final answer
   x = 128,678.37