Finding the Third Proportional to 67,620 and 105,115.50

Step by Step Solution

1. Step 1: Write the proportion equation
   67,620 : 105,115.50 = 105,115.50 : x
2. Step 2: Convert to fraction form
   67,620/105,115.50 = 105,115.50/x
3. Step 3: Cross multiply
   67,620x = 105,115.50 × 105,115.50
4. Step 4: Simplify right side
   67,620x = 11,049,268,340.25
5. Step 5: Solve for x
   x = 11,049,268,340.25/67,620
6. Step 6: Final answer
   x = 163,402.37