Finding the Third Proportional to 5,905,878 and 8,445,345

Step by Step Solution

1. Step 1: Write the proportion equation
   5,905,878 : 8,445,345 = 8,445,345 : x
2. Step 2: Convert to fraction form
   5,905,878/8,445,345 = 8,445,345/x
3. Step 3: Cross multiply
   5,905,878x = 8,445,345 × 8,445,345
4. Step 4: Simplify right side
   5,905,878x = 71,323,852,169,025
5. Step 5: Solve for x
   x = 71,323,852,169,025/5,905,878
6. Step 6: Final answer
   x = 12,076,756.78