Finding the Third Proportional to 139,086 and 297,852

Step by Step Solution

1. Step 1: Write the proportion equation
   139,086 : 297,852 = 297,852 : x
2. Step 2: Convert to fraction form
   139,086/297,852 = 297,852/x
3. Step 3: Cross multiply
   139,086x = 297,852 × 297,852
4. Step 4: Simplify right side
   139,086x = 88,715,813,904
5. Step 5: Solve for x
   x = 88,715,813,904/139,086
6. Step 6: Final answer
   x = 637,848.63