Finding the Third Proportional to 640,840,584 and 1,315,654,064

Step by Step Solution

1. Step 1: Write the proportion equation
   640,840,584 : 1,315,654,064 = 1,315,654,064 : x
2. Step 2: Convert to fraction form
   640,840,584/1,315,654,064 = 1,315,654,064/x
3. Step 3: Cross multiply
   640,840,584x = 1,315,654,064 × 1,315,654,064
4. Step 4: Simplify right side
   640,840,584x = 1,730,945,616,119,716,096
5. Step 5: Solve for x
   x = 1,730,945,616,119,716,096/640,840,584
6. Step 6: Final answer
   x = 2,701,054,925.88