Finding the Third Proportional to 42,089,013 and 90,443,776.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,089,013 : 90,443,776.50 = 90,443,776.50 : x
2. Step 2: Convert to fraction form
   42,089,013/90,443,776.50 = 90,443,776.50/x
3. Step 3: Cross multiply
   42,089,013x = 90,443,776.50 × 90,443,776.50
4. Step 4: Simplify right side
   42,089,013x = 8,180,076,707,581,952
5. Step 5: Solve for x
   x = 8,180,076,707,581,952/42,089,013
6. Step 6: Final answer
   x = 194,351,830.19