Finding the Third Proportional to 205,314,381 and 427,611,870

Step by Step Solution

1. Step 1: Write the proportion equation
   205,314,381 : 427,611,870 = 427,611,870 : x
2. Step 2: Convert to fraction form
   205,314,381/427,611,870 = 427,611,870/x
3. Step 3: Cross multiply
   205,314,381x = 427,611,870 × 427,611,870
4. Step 4: Simplify right side
   205,314,381x = 182,851,911,364,896,896
5. Step 5: Solve for x
   x = 182,851,911,364,896,896/205,314,381
6. Step 6: Final answer
   x = 890,594,757.53