Finding the Third Proportional to 74,385 and 113,320.69

Step by Step Solution

1. Step 1: Write the proportion equation
   74,385 : 113,320.69 = 113,320.69 : x
2. Step 2: Convert to fraction form
   74,385/113,320.69 = 113,320.69/x
3. Step 3: Cross multiply
   74,385x = 113,320.69 × 113,320.69
4. Step 4: Simplify right side
   74,385x = 12,841,578,215.47
5. Step 5: Solve for x
   x = 12,841,578,215.47/74,385
6. Step 6: Final answer
   x = 172,636.66