Finding the Third Proportional to 3,663,261 and 5,385,132

Step by Step Solution

1. Step 1: Write the proportion equation
   3,663,261 : 5,385,132 = 5,385,132 : x
2. Step 2: Convert to fraction form
   3,663,261/5,385,132 = 5,385,132/x
3. Step 3: Cross multiply
   3,663,261x = 5,385,132 × 5,385,132
4. Step 4: Simplify right side
   3,663,261x = 28,999,646,657,424
5. Step 5: Solve for x
   x = 28,999,646,657,424/3,663,261
6. Step 6: Final answer
   x = 7,916,347.39