Finding the Third Proportional to 361,803 and 531,862.50

Step by Step Solution

1. Step 1: Write the proportion equation
   361,803 : 531,862.50 = 531,862.50 : x
2. Step 2: Convert to fraction form
   361,803/531,862.50 = 531,862.50/x
3. Step 3: Cross multiply
   361,803x = 531,862.50 × 531,862.50
4. Step 4: Simplify right side
   361,803x = 282,877,718,906.25
5. Step 5: Solve for x
   x = 282,877,718,906.25/361,803
6. Step 6: Final answer
   x = 781,855.65