Finding the Third Proportional to 90,842.25 and 139,441.13

Step by Step Solution

1. Step 1: Write the proportion equation
   90,842.25 : 139,441.13 = 139,441.13 : x
2. Step 2: Convert to fraction form
   90,842.25/139,441.13 = 139,441.13/x
3. Step 3: Cross multiply
   90,842.25x = 139,441.13 × 139,441.13
4. Step 4: Simplify right side
   90,842.25x = 19,443,827,341.27
5. Step 5: Solve for x
   x = 19,443,827,341.27/90,842.25
6. Step 6: Final answer
   x = 214,039.47