Finding the Third Proportional to 139,146 and 297,969

Step by Step Solution

1. Step 1: Write the proportion equation
   139,146 : 297,969 = 297,969 : x
2. Step 2: Convert to fraction form
   139,146/297,969 = 297,969/x
3. Step 3: Cross multiply
   139,146x = 297,969 × 297,969
4. Step 4: Simplify right side
   139,146x = 88,785,524,961
5. Step 5: Solve for x
   x = 88,785,524,961/139,146
6. Step 6: Final answer
   x = 638,074.58