Finding the Third Proportional to 287,068.50 and 670,506

Step by Step Solution

1. Step 1: Write the proportion equation
   287,068.50 : 670,506 = 670,506 : x
2. Step 2: Convert to fraction form
   287,068.50/670,506 = 670,506/x
3. Step 3: Cross multiply
   287,068.50x = 670,506 × 670,506
4. Step 4: Simplify right side
   287,068.50x = 449,578,296,036
5. Step 5: Solve for x
   x = 449,578,296,036/287,068.50
6. Step 6: Final answer
   x = 1,566,101.11