Finding the Third Proportional to 28,820 and 45,112

Step by Step Solution

1. Step 1: Write the proportion equation
   28,820 : 45,112 = 45,112 : x
2. Step 2: Convert to fraction form
   28,820/45,112 = 45,112/x
3. Step 3: Cross multiply
   28,820x = 45,112 × 45,112
4. Step 4: Simplify right side
   28,820x = 2,035,092,544
5. Step 5: Solve for x
   x = 2,035,092,544/28,820
6. Step 6: Final answer
   x = 70,613.90