Finding the Third Proportional to 345,384 and 745,191

Step by Step Solution

1. Step 1: Write the proportion equation
   345,384 : 745,191 = 745,191 : x
2. Step 2: Convert to fraction form
   345,384/745,191 = 745,191/x
3. Step 3: Cross multiply
   345,384x = 745,191 × 745,191
4. Step 4: Simplify right side
   345,384x = 555,309,626,481
5. Step 5: Solve for x
   x = 555,309,626,481/345,384
6. Step 6: Final answer
   x = 1,607,803.56