Finding the Third Proportional to 139,848 and 209,786

Step by Step Solution

1. Step 1: Write the proportion equation
   139,848 : 209,786 = 209,786 : x
2. Step 2: Convert to fraction form
   139,848/209,786 = 209,786/x
3. Step 3: Cross multiply
   139,848x = 209,786 × 209,786
4. Step 4: Simplify right side
   139,848x = 44,010,165,796
5. Step 5: Solve for x
   x = 44,010,165,796/139,848
6. Step 6: Final answer
   x = 314,700.00