Finding the Third Proportional to 447,756 and 921,790.50

Step by Step Solution

1. Step 1: Write the proportion equation
   447,756 : 921,790.50 = 921,790.50 : x
2. Step 2: Convert to fraction form
   447,756/921,790.50 = 921,790.50/x
3. Step 3: Cross multiply
   447,756x = 921,790.50 × 921,790.50
4. Step 4: Simplify right side
   447,756x = 849,697,725,890.25
5. Step 5: Solve for x
   x = 849,697,725,890.25/447,756
6. Step 6: Final answer
   x = 1,897,680.27