Finding the Third Proportional to 42,210.75 and 90,071.25

Step by Step Solution

1. Step 1: Write the proportion equation
   42,210.75 : 90,071.25 = 90,071.25 : x
2. Step 2: Convert to fraction form
   42,210.75/90,071.25 = 90,071.25/x
3. Step 3: Cross multiply
   42,210.75x = 90,071.25 × 90,071.25
4. Step 4: Simplify right side
   42,210.75x = 8,112,830,076.56
5. Step 5: Solve for x
   x = 8,112,830,076.56/42,210.75
6. Step 6: Final answer
   x = 192,198.20