Finding the Third Proportional to 139,388.50 and 296,759

Step by Step Solution

1. Step 1: Write the proportion equation
   139,388.50 : 296,759 = 296,759 : x
2. Step 2: Convert to fraction form
   139,388.50/296,759 = 296,759/x
3. Step 3: Cross multiply
   139,388.50x = 296,759 × 296,759
4. Step 4: Simplify right side
   139,388.50x = 88,065,904,081
5. Step 5: Solve for x
   x = 88,065,904,081/139,388.50
6. Step 6: Final answer
   x = 631,801.79