Finding the Third Proportional to 139,156 and 297,988

Step by Step Solution

1. Step 1: Write the proportion equation
   139,156 : 297,988 = 297,988 : x
2. Step 2: Convert to fraction form
   139,156/297,988 = 297,988/x
3. Step 3: Cross multiply
   139,156x = 297,988 × 297,988
4. Step 4: Simplify right side
   139,156x = 88,796,848,144
5. Step 5: Solve for x
   x = 88,796,848,144/139,156
6. Step 6: Final answer
   x = 638,110.09