Finding the Third Proportional to 90,622.13 and 139,077

Step by Step Solution

1. Step 1: Write the proportion equation
   90,622.13 : 139,077 = 139,077 : x
2. Step 2: Convert to fraction form
   90,622.13/139,077 = 139,077/x
3. Step 3: Cross multiply
   90,622.13x = 139,077 × 139,077
4. Step 4: Simplify right side
   90,622.13x = 19,342,411,929
5. Step 5: Solve for x
   x = 19,342,411,929/90,622.13
6. Step 6: Final answer
   x = 213,440.28