Finding the Third Proportional to 643,360 and 1,375,070

Step by Step Solution

1. Step 1: Write the proportion equation
   643,360 : 1,375,070 = 1,375,070 : x
2. Step 2: Convert to fraction form
   643,360/1,375,070 = 1,375,070/x
3. Step 3: Cross multiply
   643,360x = 1,375,070 × 1,375,070
4. Step 4: Simplify right side
   643,360x = 1,890,817,504,900
5. Step 5: Solve for x
   x = 1,890,817,504,900/643,360
6. Step 6: Final answer
   x = 2,938,972.74