Finding the Third Proportional to 618,321 and 983,583.50

Step by Step Solution

1. Step 1: Write the proportion equation
   618,321 : 983,583.50 = 983,583.50 : x
2. Step 2: Convert to fraction form
   618,321/983,583.50 = 983,583.50/x
3. Step 3: Cross multiply
   618,321x = 983,583.50 × 983,583.50
4. Step 4: Simplify right side
   618,321x = 967,436,501,472.25
5. Step 5: Solve for x
   x = 967,436,501,472.25/618,321
6. Step 6: Final answer
   x = 1,564,618.54