Finding the Third Proportional to 28,710 and 42,122

Step by Step Solution

1. Step 1: Write the proportion equation
   28,710 : 42,122 = 42,122 : x
2. Step 2: Convert to fraction form
   28,710/42,122 = 42,122/x
3. Step 3: Cross multiply
   28,710x = 42,122 × 42,122
4. Step 4: Simplify right side
   28,710x = 1,774,262,884
5. Step 5: Solve for x
   x = 1,774,262,884/28,710
6. Step 6: Final answer
   x = 61,799.47