Finding the Third Proportional to 4,089,558 and 8,602,178

Step by Step Solution

1. Step 1: Write the proportion equation
   4,089,558 : 8,602,178 = 8,602,178 : x
2. Step 2: Convert to fraction form
   4,089,558/8,602,178 = 8,602,178/x
3. Step 3: Cross multiply
   4,089,558x = 8,602,178 × 8,602,178
4. Step 4: Simplify right side
   4,089,558x = 73,997,466,343,684
5. Step 5: Solve for x
   x = 73,997,466,343,684/4,089,558
6. Step 6: Final answer
   x = 18,094,245.48