Finding the Third Proportional to 369,813 and 528,448.50

Step by Step Solution

1. Step 1: Write the proportion equation
   369,813 : 528,448.50 = 528,448.50 : x
2. Step 2: Convert to fraction form
   369,813/528,448.50 = 528,448.50/x
3. Step 3: Cross multiply
   369,813x = 528,448.50 × 528,448.50
4. Step 4: Simplify right side
   369,813x = 279,257,817,152.25
5. Step 5: Solve for x
   x = 279,257,817,152.25/369,813
6. Step 6: Final answer
   x = 755,132.51