Finding the Third Proportional to 139,148 and 297,972

Step by Step Solution

1. Step 1: Write the proportion equation
   139,148 : 297,972 = 297,972 : x
2. Step 2: Convert to fraction form
   139,148/297,972 = 297,972/x
3. Step 3: Cross multiply
   139,148x = 297,972 × 297,972
4. Step 4: Simplify right side
   139,148x = 88,787,312,784
5. Step 5: Solve for x
   x = 88,787,312,784/139,148
6. Step 6: Final answer
   x = 638,078.25