Finding the Third Proportional to 345,462 and 747,510.75

Step by Step Solution

1. Step 1: Write the proportion equation
   345,462 : 747,510.75 = 747,510.75 : x
2. Step 2: Convert to fraction form
   345,462/747,510.75 = 747,510.75/x
3. Step 3: Cross multiply
   345,462x = 747,510.75 × 747,510.75
4. Step 4: Simplify right side
   345,462x = 558,772,321,365.56
5. Step 5: Solve for x
   x = 558,772,321,365.56/345,462
6. Step 6: Final answer
   x = 1,617,463.92