Finding the Third Proportional to 78,388 and 112,051.50

Step by Step Solution

1. Step 1: Write the proportion equation
   78,388 : 112,051.50 = 112,051.50 : x
2. Step 2: Convert to fraction form
   78,388/112,051.50 = 112,051.50/x
3. Step 3: Cross multiply
   78,388x = 112,051.50 × 112,051.50
4. Step 4: Simplify right side
   78,388x = 12,555,538,652.25
5. Step 5: Solve for x
   x = 12,555,538,652.25/78,388
6. Step 6: Final answer
   x = 160,171.69