Finding the Third Proportional to 42,810 and 91,160

Step by Step Solution

1. Step 1: Write the proportion equation
   42,810 : 91,160 = 91,160 : x
2. Step 2: Convert to fraction form
   42,810/91,160 = 91,160/x
3. Step 3: Cross multiply
   42,810x = 91,160 × 91,160
4. Step 4: Simplify right side
   42,810x = 8,310,145,600
5. Step 5: Solve for x
   x = 8,310,145,600/42,810
6. Step 6: Final answer
   x = 194,116.93