Finding the Third Proportional to 345,112 and 706,956

Step by Step Solution

1. Step 1: Write the proportion equation
   345,112 : 706,956 = 706,956 : x
2. Step 2: Convert to fraction form
   345,112/706,956 = 706,956/x
3. Step 3: Cross multiply
   345,112x = 706,956 × 706,956
4. Step 4: Simplify right side
   345,112x = 499,786,785,936
5. Step 5: Solve for x
   x = 499,786,785,936/345,112
6. Step 6: Final answer
   x = 1,448,187.21