Finding the Third Proportional to 139,402 and 296,786

Step by Step Solution

1. Step 1: Write the proportion equation
   139,402 : 296,786 = 296,786 : x
2. Step 2: Convert to fraction form
   139,402/296,786 = 296,786/x
3. Step 3: Cross multiply
   139,402x = 296,786 × 296,786
4. Step 4: Simplify right side
   139,402x = 88,081,929,796
5. Step 5: Solve for x
   x = 88,081,929,796/139,402
6. Step 6: Final answer
   x = 631,855.57