Finding the Third Proportional to 72,891 and 112,442.63

Step by Step Solution

1. Step 1: Write the proportion equation
   72,891 : 112,442.63 = 112,442.63 : x
2. Step 2: Convert to fraction form
   72,891/112,442.63 = 112,442.63/x
3. Step 3: Cross multiply
   72,891x = 112,442.63 × 112,442.63
4. Step 4: Simplify right side
   72,891x = 12,643,343,916.89
5. Step 5: Solve for x
   x = 12,643,343,916.89/72,891
6. Step 6: Final answer
   x = 173,455.49