Finding the Third Proportional to 641,009 and 1,367,810.50

Step by Step Solution

1. Step 1: Write the proportion equation
   641,009 : 1,367,810.50 = 1,367,810.50 : x
2. Step 2: Convert to fraction form
   641,009/1,367,810.50 = 1,367,810.50/x
3. Step 3: Cross multiply
   641,009x = 1,367,810.50 × 1,367,810.50
4. Step 4: Simplify right side
   641,009x = 1,870,905,563,910.25
5. Step 5: Solve for x
   x = 1,870,905,563,910.25/641,009
6. Step 6: Final answer
   x = 2,918,688.45