Finding the Third Proportional to 90,784,842.50 and 188,029,462

Step by Step Solution

1. Step 1: Write the proportion equation
   90,784,842.50 : 188,029,462 = 188,029,462 : x
2. Step 2: Convert to fraction form
   90,784,842.50/188,029,462 = 188,029,462/x
3. Step 3: Cross multiply
   90,784,842.50x = 188,029,462 × 188,029,462
4. Step 4: Simplify right side
   90,784,842.50x = 35,355,078,580,009,444
5. Step 5: Solve for x
   x = 35,355,078,580,009,444/90,784,842.50
6. Step 6: Final answer
   x = 389,438,122.12