Finding the Third Proportional to 6,404,088 and 9,905,386

Step by Step Solution

1. Step 1: Write the proportion equation
   6,404,088 : 9,905,386 = 9,905,386 : x
2. Step 2: Convert to fraction form
   6,404,088/9,905,386 = 9,905,386/x
3. Step 3: Cross multiply
   6,404,088x = 9,905,386 × 9,905,386
4. Step 4: Simplify right side
   6,404,088x = 98,116,671,808,996
5. Step 5: Solve for x
   x = 98,116,671,808,996/6,404,088
6. Step 6: Final answer
   x = 15,320,943.72