Finding the Third Proportional to 380,470.50 and 803,358

Step by Step Solution

1. Step 1: Write the proportion equation
   380,470.50 : 803,358 = 803,358 : x
2. Step 2: Convert to fraction form
   380,470.50/803,358 = 803,358/x
3. Step 3: Cross multiply
   380,470.50x = 803,358 × 803,358
4. Step 4: Simplify right side
   380,470.50x = 645,384,076,164
5. Step 5: Solve for x
   x = 645,384,076,164/380,470.50
6. Step 6: Final answer
   x = 1,696,278.89