Finding the Third Proportional to 20,100.25 and 42,430.25

Step by Step Solution

1. Step 1: Write the proportion equation
   20,100.25 : 42,430.25 = 42,430.25 : x
2. Step 2: Convert to fraction form
   20,100.25/42,430.25 = 42,430.25/x
3. Step 3: Cross multiply
   20,100.25x = 42,430.25 × 42,430.25
4. Step 4: Simplify right side
   20,100.25x = 1,800,326,115.06
5. Step 5: Solve for x
   x = 1,800,326,115.06/20,100.25
6. Step 6: Final answer
   x = 89,567.35