Finding the Third Proportional to 42,987 and 90,798

Step by Step Solution

1. Step 1: Write the proportion equation
   42,987 : 90,798 = 90,798 : x
2. Step 2: Convert to fraction form
   42,987/90,798 = 90,798/x
3. Step 3: Cross multiply
   42,987x = 90,798 × 90,798
4. Step 4: Simplify right side
   42,987x = 8,244,276,804
5. Step 5: Solve for x
   x = 8,244,276,804/42,987
6. Step 6: Final answer
   x = 191,785.35