Finding the Third Proportional to 42,279.25 and 91,099

Step by Step Solution

1. Step 1: Write the proportion equation
   42,279.25 : 91,099 = 91,099 : x
2. Step 2: Convert to fraction form
   42,279.25/91,099 = 91,099/x
3. Step 3: Cross multiply
   42,279.25x = 91,099 × 91,099
4. Step 4: Simplify right side
   42,279.25x = 8,299,027,801
5. Step 5: Solve for x
   x = 8,299,027,801/42,279.25
6. Step 6: Final answer
   x = 196,290.80