Finding the Third Proportional to 28,188 and 42,190

Step by Step Solution

1. Step 1: Write the proportion equation
   28,188 : 42,190 = 42,190 : x
2. Step 2: Convert to fraction form
   28,188/42,190 = 42,190/x
3. Step 3: Cross multiply
   28,188x = 42,190 × 42,190
4. Step 4: Simplify right side
   28,188x = 1,779,996,100
5. Step 5: Solve for x
   x = 1,779,996,100/28,188
6. Step 6: Final answer
   x = 63,147.30