Finding the Third Proportional to 42,658 and 99,168

Step by Step Solution

1. Step 1: Write the proportion equation
   42,658 : 99,168 = 99,168 : x
2. Step 2: Convert to fraction form
   42,658/99,168 = 99,168/x
3. Step 3: Cross multiply
   42,658x = 99,168 × 99,168
4. Step 4: Simplify right side
   42,658x = 9,834,292,224
5. Step 5: Solve for x
   x = 9,834,292,224/42,658
6. Step 6: Final answer
   x = 230,538.05