Finding the Third Proportional to 300,106.50 and 708,429

Step by Step Solution

1. Step 1: Write the proportion equation
   300,106.50 : 708,429 = 708,429 : x
2. Step 2: Convert to fraction form
   300,106.50/708,429 = 708,429/x
3. Step 3: Cross multiply
   300,106.50x = 708,429 × 708,429
4. Step 4: Simplify right side
   300,106.50x = 501,871,648,041
5. Step 5: Solve for x
   x = 501,871,648,041/300,106.50
6. Step 6: Final answer
   x = 1,672,311.82