Finding the Third Proportional to 5,638,436 and 8,589,838

Step by Step Solution

1. Step 1: Write the proportion equation
   5,638,436 : 8,589,838 = 8,589,838 : x
2. Step 2: Convert to fraction form
   5,638,436/8,589,838 = 8,589,838/x
3. Step 3: Cross multiply
   5,638,436x = 8,589,838 × 8,589,838
4. Step 4: Simplify right side
   5,638,436x = 73,785,316,866,244
5. Step 5: Solve for x
   x = 73,785,316,866,244/5,638,436
6. Step 6: Final answer
   x = 13,086,131.84