Finding the Third Proportional to 72,578 and 109,961.50

Step by Step Solution

1. Step 1: Write the proportion equation
   72,578 : 109,961.50 = 109,961.50 : x
2. Step 2: Convert to fraction form
   72,578/109,961.50 = 109,961.50/x
3. Step 3: Cross multiply
   72,578x = 109,961.50 × 109,961.50
4. Step 4: Simplify right side
   72,578x = 12,091,531,482.25
5. Step 5: Solve for x
   x = 12,091,531,482.25/72,578
6. Step 6: Final answer
   x = 166,600.51