Finding the Third Proportional to 424,321.50 and 915,075

Step by Step Solution

1. Step 1: Write the proportion equation
   424,321.50 : 915,075 = 915,075 : x
2. Step 2: Convert to fraction form
   424,321.50/915,075 = 915,075/x
3. Step 3: Cross multiply
   424,321.50x = 915,075 × 915,075
4. Step 4: Simplify right side
   424,321.50x = 837,362,255,625
5. Step 5: Solve for x
   x = 837,362,255,625/424,321.50
6. Step 6: Final answer
   x = 1,973,414.63