Finding the Third Proportional to 558,915 and 790,096.50

Step by Step Solution

1. Step 1: Write the proportion equation
   558,915 : 790,096.50 = 790,096.50 : x
2. Step 2: Convert to fraction form
   558,915/790,096.50 = 790,096.50/x
3. Step 3: Cross multiply
   558,915x = 790,096.50 × 790,096.50
4. Step 4: Simplify right side
   558,915x = 624,252,479,312.25
5. Step 5: Solve for x
   x = 624,252,479,312.25/558,915
6. Step 6: Final answer
   x = 1,116,900.57