Finding the Third Proportional to 5,911,490 and 8,909,516

Step by Step Solution

1. Step 1: Write the proportion equation
   5,911,490 : 8,909,516 = 8,909,516 : x
2. Step 2: Convert to fraction form
   5,911,490/8,909,516 = 8,909,516/x
3. Step 3: Cross multiply
   5,911,490x = 8,909,516 × 8,909,516
4. Step 4: Simplify right side
   5,911,490x = 79,379,475,354,256
5. Step 5: Solve for x
   x = 79,379,475,354,256/5,911,490
6. Step 6: Final answer
   x = 13,427,997.91