Finding the Third Proportional to 7,663,616 and 12,772,146

Step by Step Solution

1. Step 1: Write the proportion equation
   7,663,616 : 12,772,146 = 12,772,146 : x
2. Step 2: Convert to fraction form
   7,663,616/12,772,146 = 12,772,146/x
3. Step 3: Cross multiply
   7,663,616x = 12,772,146 × 12,772,146
4. Step 4: Simplify right side
   7,663,616x = 163,127,713,445,316
5. Step 5: Solve for x
   x = 163,127,713,445,316/7,663,616
6. Step 6: Final answer
   x = 21,285,997.82