Finding the Third Proportional to 393,123.50 and 589,068.50

Step by Step Solution

1. Step 1: Write the proportion equation
   393,123.50 : 589,068.50 = 589,068.50 : x
2. Step 2: Convert to fraction form
   393,123.50/589,068.50 = 589,068.50/x
3. Step 3: Cross multiply
   393,123.50x = 589,068.50 × 589,068.50
4. Step 4: Simplify right side
   393,123.50x = 347,001,697,692.25
5. Step 5: Solve for x
   x = 347,001,697,692.25/393,123.50
6. Step 6: Final answer
   x = 882,678.59