Finding the Third Proportional to 616,861.50 and 920,158

Step by Step Solution

1. Step 1: Write the proportion equation
   616,861.50 : 920,158 = 920,158 : x
2. Step 2: Convert to fraction form
   616,861.50/920,158 = 920,158/x
3. Step 3: Cross multiply
   616,861.50x = 920,158 × 920,158
4. Step 4: Simplify right side
   616,861.50x = 846,690,744,964
5. Step 5: Solve for x
   x = 846,690,744,964/616,861.50
6. Step 6: Final answer
   x = 1,372,578.36