Finding the Third Proportional to 643,330 and 1,372,156

Step by Step Solution

1. Step 1: Write the proportion equation
   643,330 : 1,372,156 = 1,372,156 : x
2. Step 2: Convert to fraction form
   643,330/1,372,156 = 1,372,156/x
3. Step 3: Cross multiply
   643,330x = 1,372,156 × 1,372,156
4. Step 4: Simplify right side
   643,330x = 1,882,812,088,336
5. Step 5: Solve for x
   x = 1,882,812,088,336/643,330
6. Step 6: Final answer
   x = 2,926,666.08