Finding the Third Proportional to 42,008.63 and 90,259.31

Step by Step Solution

1. Step 1: Write the proportion equation
   42,008.63 : 90,259.31 = 90,259.31 : x
2. Step 2: Convert to fraction form
   42,008.63/90,259.31 = 90,259.31/x
3. Step 3: Cross multiply
   42,008.63x = 90,259.31 × 90,259.31
4. Step 4: Simplify right side
   42,008.63x = 8,146,743,492.97
5. Step 5: Solve for x
   x = 8,146,743,492.97/42,008.63
6. Step 6: Final answer
   x = 193,930.26