Finding the Third Proportional to 67,047.19 and 139,607.16

Step by Step Solution

1. Step 1: Write the proportion equation
   67,047.19 : 139,607.16 = 139,607.16 : x
2. Step 2: Convert to fraction form
   67,047.19/139,607.16 = 139,607.16/x
3. Step 3: Cross multiply
   67,047.19x = 139,607.16 × 139,607.16
4. Step 4: Simplify right side
   67,047.19x = 19,490,158,076.21
5. Step 5: Solve for x
   x = 19,490,158,076.21/67,047.19
6. Step 6: Final answer
   x = 290,693.15