Finding the Third Proportional to 121,229 and 163,071.50

Step by Step Solution

1. Step 1: Write the proportion equation
   121,229 : 163,071.50 = 163,071.50 : x
2. Step 2: Convert to fraction form
   121,229/163,071.50 = 163,071.50/x
3. Step 3: Cross multiply
   121,229x = 163,071.50 × 163,071.50
4. Step 4: Simplify right side
   121,229x = 26,592,314,112.25
5. Step 5: Solve for x
   x = 26,592,314,112.25/121,229
6. Step 6: Final answer
   x = 219,356.05