Finding the Third Proportional to 6,404,051 and 9,905,336

Step by Step Solution

1. Step 1: Write the proportion equation
   6,404,051 : 9,905,336 = 9,905,336 : x
2. Step 2: Convert to fraction form
   6,404,051/9,905,336 = 9,905,336/x
3. Step 3: Cross multiply
   6,404,051x = 9,905,336 × 9,905,336
4. Step 4: Simplify right side
   6,404,051x = 98,115,681,272,896
5. Step 5: Solve for x
   x = 98,115,681,272,896/6,404,051
6. Step 6: Final answer
   x = 15,320,877.56