Finding the Third Proportional to 68,154 and 139,090

Step by Step Solution

1. Step 1: Write the proportion equation
   68,154 : 139,090 = 139,090 : x
2. Step 2: Convert to fraction form
   68,154/139,090 = 139,090/x
3. Step 3: Cross multiply
   68,154x = 139,090 × 139,090
4. Step 4: Simplify right side
   68,154x = 19,346,028,100
5. Step 5: Solve for x
   x = 19,346,028,100/68,154
6. Step 6: Final answer
   x = 283,857.56