Finding the Third Proportional to 293,977.50 and 644,005.50

Step by Step Solution

1. Step 1: Write the proportion equation
   293,977.50 : 644,005.50 = 644,005.50 : x
2. Step 2: Convert to fraction form
   293,977.50/644,005.50 = 644,005.50/x
3. Step 3: Cross multiply
   293,977.50x = 644,005.50 × 644,005.50
4. Step 4: Simplify right side
   293,977.50x = 414,743,084,030.25
5. Step 5: Solve for x
   x = 414,743,084,030.25/293,977.50
6. Step 6: Final answer
   x = 1,410,798.73