Finding the Third Proportional to 415,641.50 and 669,362

Step by Step Solution

1. Step 1: Write the proportion equation
   415,641.50 : 669,362 = 669,362 : x
2. Step 2: Convert to fraction form
   415,641.50/669,362 = 669,362/x
3. Step 3: Cross multiply
   415,641.50x = 669,362 × 669,362
4. Step 4: Simplify right side
   415,641.50x = 448,045,487,044
5. Step 5: Solve for x
   x = 448,045,487,044/415,641.50
6. Step 6: Final answer
   x = 1,077,961.39