Finding the Third Proportional to 455,589 and 920,814.75

Step by Step Solution

1. Step 1: Write the proportion equation
   455,589 : 920,814.75 = 920,814.75 : x
2. Step 2: Convert to fraction form
   455,589/920,814.75 = 920,814.75/x
3. Step 3: Cross multiply
   455,589x = 920,814.75 × 920,814.75
4. Step 4: Simplify right side
   455,589x = 847,899,803,817.56
5. Step 5: Solve for x
   x = 847,899,803,817.56/455,589
6. Step 6: Final answer
   x = 1,861,106.84