Finding the Third Proportional to 647,472 and 1,409,890.50

Step by Step Solution

1. Step 1: Write the proportion equation
   647,472 : 1,409,890.50 = 1,409,890.50 : x
2. Step 2: Convert to fraction form
   647,472/1,409,890.50 = 1,409,890.50/x
3. Step 3: Cross multiply
   647,472x = 1,409,890.50 × 1,409,890.50
4. Step 4: Simplify right side
   647,472x = 1,987,791,221,990.25
5. Step 5: Solve for x
   x = 1,987,791,221,990.25/647,472
6. Step 6: Final answer
   x = 3,070,080.59