Finding the Third Proportional to 139,410 and 161,118

Step by Step Solution

1. Step 1: Write the proportion equation
   139,410 : 161,118 = 161,118 : x
2. Step 2: Convert to fraction form
   139,410/161,118 = 161,118/x
3. Step 3: Cross multiply
   139,410x = 161,118 × 161,118
4. Step 4: Simplify right side
   139,410x = 25,959,009,924
5. Step 5: Solve for x
   x = 25,959,009,924/139,410
6. Step 6: Final answer
   x = 186,206.23