Finding the Third Proportional to 28,988 and 61,090

Step by Step Solution

1. Step 1: Write the proportion equation
   28,988 : 61,090 = 61,090 : x
2. Step 2: Convert to fraction form
   28,988/61,090 = 61,090/x
3. Step 3: Cross multiply
   28,988x = 61,090 × 61,090
4. Step 4: Simplify right side
   28,988x = 3,731,988,100
5. Step 5: Solve for x
   x = 3,731,988,100/28,988
6. Step 6: Final answer
   x = 128,742.52