Finding the Third Proportional to 13,686,591 and 21,185,064

Step by Step Solution

1. Step 1: Write the proportion equation
   13,686,591 : 21,185,064 = 21,185,064 : x
2. Step 2: Convert to fraction form
   13,686,591/21,185,064 = 21,185,064/x
3. Step 3: Cross multiply
   13,686,591x = 21,185,064 × 21,185,064
4. Step 4: Simplify right side
   13,686,591x = 448,806,936,684,096
5. Step 5: Solve for x
   x = 448,806,936,684,096/13,686,591
6. Step 6: Final answer
   x = 32,791,725.62