Finding the Third Proportional to 90,159 and 141,427.50

Step by Step Solution

1. Step 1: Write the proportion equation
   90,159 : 141,427.50 = 141,427.50 : x
2. Step 2: Convert to fraction form
   90,159/141,427.50 = 141,427.50/x
3. Step 3: Cross multiply
   90,159x = 141,427.50 × 141,427.50
4. Step 4: Simplify right side
   90,159x = 20,001,737,756.25
5. Step 5: Solve for x
   x = 20,001,737,756.25/90,159
6. Step 6: Final answer
   x = 221,849.60