Finding the Third Proportional to 61,090 and 89,450

Step by Step Solution

1. Step 1: Write the proportion equation
   61,090 : 89,450 = 89,450 : x
2. Step 2: Convert to fraction form
   61,090/89,450 = 89,450/x
3. Step 3: Cross multiply
   61,090x = 89,450 × 89,450
4. Step 4: Simplify right side
   61,090x = 8,001,302,500
5. Step 5: Solve for x
   x = 8,001,302,500/61,090
6. Step 6: Final answer
   x = 130,975.65