Finding the Third Proportional to 67,066 and 139,641

Step by Step Solution

1. Step 1: Write the proportion equation
   67,066 : 139,641 = 139,641 : x
2. Step 2: Convert to fraction form
   67,066/139,641 = 139,641/x
3. Step 3: Cross multiply
   67,066x = 139,641 × 139,641
4. Step 4: Simplify right side
   67,066x = 19,499,608,881
5. Step 5: Solve for x
   x = 19,499,608,881/67,066
6. Step 6: Final answer
   x = 290,752.53