Finding the Third Proportional to 615,528 and 920,830.50

Step by Step Solution

1. Step 1: Write the proportion equation
   615,528 : 920,830.50 = 920,830.50 : x
2. Step 2: Convert to fraction form
   615,528/920,830.50 = 920,830.50/x
3. Step 3: Cross multiply
   615,528x = 920,830.50 × 920,830.50
4. Step 4: Simplify right side
   615,528x = 847,928,809,730.25
5. Step 5: Solve for x
   x = 847,928,809,730.25/615,528
6. Step 6: Final answer
   x = 1,377,563.34