Finding the Third Proportional to 35,520 and 72,090

Step by Step Solution

1. Step 1: Write the proportion equation
   35,520 : 72,090 = 72,090 : x
2. Step 2: Convert to fraction form
   35,520/72,090 = 72,090/x
3. Step 3: Cross multiply
   35,520x = 72,090 × 72,090
4. Step 4: Simplify right side
   35,520x = 5,196,968,100
5. Step 5: Solve for x
   x = 5,196,968,100/35,520
6. Step 6: Final answer
   x = 146,311.04