Finding the Third Proportional to 89,820 and 130,779

Step by Step Solution

1. Step 1: Write the proportion equation
   89,820 : 130,779 = 130,779 : x
2. Step 2: Convert to fraction form
   89,820/130,779 = 130,779/x
3. Step 3: Cross multiply
   89,820x = 130,779 × 130,779
4. Step 4: Simplify right side
   89,820x = 17,103,146,841
5. Step 5: Solve for x
   x = 17,103,146,841/89,820
6. Step 6: Final answer
   x = 190,415.80