Finding the Third Proportional to 90,851.63 and 139,451.63

Step by Step Solution

1. Step 1: Write the proportion equation
   90,851.63 : 139,451.63 = 139,451.63 : x
2. Step 2: Convert to fraction form
   90,851.63/139,451.63 = 139,451.63/x
3. Step 3: Cross multiply
   90,851.63x = 139,451.63 × 139,451.63
4. Step 4: Simplify right side
   90,851.63x = 19,446,755,715.14
5. Step 5: Solve for x
   x = 19,446,755,715.14/90,851.63
6. Step 6: Final answer
   x = 214,049.62