Finding the Third Proportional to 139,346 and 296,674

Step by Step Solution

1. Step 1: Write the proportion equation
   139,346 : 296,674 = 296,674 : x
2. Step 2: Convert to fraction form
   139,346/296,674 = 296,674/x
3. Step 3: Cross multiply
   139,346x = 296,674 × 296,674
4. Step 4: Simplify right side
   139,346x = 88,015,462,276
5. Step 5: Solve for x
   x = 88,015,462,276/139,346
6. Step 6: Final answer
   x = 631,632.50