Finding the Third Proportional to 656,586 and 938,911.50

Step by Step Solution

1. Step 1: Write the proportion equation
   656,586 : 938,911.50 = 938,911.50 : x
2. Step 2: Convert to fraction form
   656,586/938,911.50 = 938,911.50/x
3. Step 3: Cross multiply
   656,586x = 938,911.50 × 938,911.50
4. Step 4: Simplify right side
   656,586x = 881,554,804,832.25
5. Step 5: Solve for x
   x = 881,554,804,832.25/656,586
6. Step 6: Final answer
   x = 1,342,634.18