Finding the Third Proportional to 359,823 and 528,070.50

Step by Step Solution

1. Step 1: Write the proportion equation
   359,823 : 528,070.50 = 528,070.50 : x
2. Step 2: Convert to fraction form
   359,823/528,070.50 = 528,070.50/x
3. Step 3: Cross multiply
   359,823x = 528,070.50 × 528,070.50
4. Step 4: Simplify right side
   359,823x = 278,858,452,970.25
5. Step 5: Solve for x
   x = 278,858,452,970.25/359,823
6. Step 6: Final answer
   x = 774,987.85