Finding the Third Proportional to 59,990,621.20 and 89,592,818.55

Step by Step Solution

1. Step 1: Write the proportion equation
   59,990,621.20 : 89,592,818.55 = 89,592,818.55 : x
2. Step 2: Convert to fraction form
   59,990,621.20/89,592,818.55 = 89,592,818.55/x
3. Step 3: Cross multiply
   59,990,621.20x = 89,592,818.55 × 89,592,818.55
4. Step 4: Simplify right side
   59,990,621.20x = 8,026,873,136,573,605
5. Step 5: Solve for x
   x = 8,026,873,136,573,605/59,990,621.20
6. Step 6: Final answer
   x = 133,802,133.99