Finding the Third Proportional to 27,385,510 and 42,648,611

Step by Step Solution

1. Step 1: Write the proportion equation
   27,385,510 : 42,648,611 = 42,648,611 : x
2. Step 2: Convert to fraction form
   27,385,510/42,648,611 = 42,648,611/x
3. Step 3: Cross multiply
   27,385,510x = 42,648,611 × 42,648,611
4. Step 4: Simplify right side
   27,385,510x = 1,818,904,020,229,321
5. Step 5: Solve for x
   x = 1,818,904,020,229,321/27,385,510
6. Step 6: Final answer
   x = 66,418,482.63