Finding the Third Proportional to 286,711 and 455,410.50

Step by Step Solution

1. Step 1: Write the proportion equation
   286,711 : 455,410.50 = 455,410.50 : x
2. Step 2: Convert to fraction form
   286,711/455,410.50 = 455,410.50/x
3. Step 3: Cross multiply
   286,711x = 455,410.50 × 455,410.50
4. Step 4: Simplify right side
   286,711x = 207,398,723,510.25
5. Step 5: Solve for x
   x = 207,398,723,510.25/286,711
6. Step 6: Final answer
   x = 723,372.05