Finding the Third Proportional to 139,407 and 296,799

Step by Step Solution

1. Step 1: Write the proportion equation
   139,407 : 296,799 = 296,799 : x
2. Step 2: Convert to fraction form
   139,407/296,799 = 296,799/x
3. Step 3: Cross multiply
   139,407x = 296,799 × 296,799
4. Step 4: Simplify right side
   139,407x = 88,089,646,401
5. Step 5: Solve for x
   x = 88,089,646,401/139,407
6. Step 6: Final answer
   x = 631,888.26