Finding the Third Proportional to 345,951 and 709,124.63

Step by Step Solution

1. Step 1: Write the proportion equation
   345,951 : 709,124.63 = 709,124.63 : x
2. Step 2: Convert to fraction form
   345,951/709,124.63 = 709,124.63/x
3. Step 3: Cross multiply
   345,951x = 709,124.63 × 709,124.63
4. Step 4: Simplify right side
   345,951x = 502,857,733,781.39
5. Step 5: Solve for x
   x = 502,857,733,781.39/345,951
6. Step 6: Final answer
   x = 1,453,551.90