Finding the Third Proportional to 189,790.59 and 400,915.83

Step by Step Solution

1. Step 1: Write the proportion equation
   189,790.59 : 400,915.83 = 400,915.83 : x
2. Step 2: Convert to fraction form
   189,790.59/400,915.83 = 400,915.83/x
3. Step 3: Cross multiply
   189,790.59x = 400,915.83 × 400,915.83
4. Step 4: Simplify right side
   189,790.59x = 160,733,501,241.16
5. Step 5: Solve for x
   x = 160,733,501,241.16/189,790.59
6. Step 6: Final answer
   x = 846,899.20