Finding the Third Proportional to 74,300 and 112,870

Step by Step Solution

1. Step 1: Write the proportion equation
   74,300 : 112,870 = 112,870 : x
2. Step 2: Convert to fraction form
   74,300/112,870 = 112,870/x
3. Step 3: Cross multiply
   74,300x = 112,870 × 112,870
4. Step 4: Simplify right side
   74,300x = 12,739,636,900
5. Step 5: Solve for x
   x = 12,739,636,900/74,300
6. Step 6: Final answer
   x = 171,462.14