Finding the Third Proportional to 8,503,963 and 13,088,820

Step by Step Solution

1. Step 1: Write the proportion equation
   8,503,963 : 13,088,820 = 13,088,820 : x
2. Step 2: Convert to fraction form
   8,503,963/13,088,820 = 13,088,820/x
3. Step 3: Cross multiply
   8,503,963x = 13,088,820 × 13,088,820
4. Step 4: Simplify right side
   8,503,963x = 171,317,208,992,400
5. Step 5: Solve for x
   x = 171,317,208,992,400/8,503,963
6. Step 6: Final answer
   x = 20,145,573.19