Finding the Third Proportional to 600,615 and 808,987.50

Step by Step Solution

1. Step 1: Write the proportion equation
   600,615 : 808,987.50 = 808,987.50 : x
2. Step 2: Convert to fraction form
   600,615/808,987.50 = 808,987.50/x
3. Step 3: Cross multiply
   600,615x = 808,987.50 × 808,987.50
4. Step 4: Simplify right side
   600,615x = 654,460,775,156.25
5. Step 5: Solve for x
   x = 654,460,775,156.25/600,615
6. Step 6: Final answer
   x = 1,089,651.07