Finding the Third Proportional to 37,420 and 57,210

Step by Step Solution

1. Step 1: Write the proportion equation
   37,420 : 57,210 = 57,210 : x
2. Step 2: Convert to fraction form
   37,420/57,210 = 57,210/x
3. Step 3: Cross multiply
   37,420x = 57,210 × 57,210
4. Step 4: Simplify right side
   37,420x = 3,272,984,100
5. Step 5: Solve for x
   x = 3,272,984,100/37,420
6. Step 6: Final answer
   x = 87,466.17